glib/fuzzing/fuzz_resolver.c
Philip Withnall e66277943d fuzzing: Add copyright/licensing headers to fuzzing files
The files have only been touched by a subset of three people: pdknsk,
Philip Withnall, and Marc-André Lureau. Their copyrights are assigned to
pdknsk, Endless OS Foundation and Red Hat.

The default license for GLib at the time of writing these files was (and
still is) LGPL-2.1-or-later.

`driver.c` came from LLVM and is under a different license:
https://github.com/llvm/llvm-project/blob/main/compiler-rt/lib/fuzzer/standalone/StandaloneFuzzTargetMain.c.
That doesn’t affect the license of GLib overall, since it’s only used
for testing during development.

Signed-off-by: Philip Withnall <pwithnall@endlessos.org>

Helps: #1415
2022-05-18 09:49:26 +01:00

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/*
* Copyright 2021 Endless OS Foundation, LLC
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "fuzz.h"
#include "gio/gnetworking.h"
#include "../gio/gthreadedresolver.h"
static void
test_for_rrtype (const guint8 *data,
gsize data_len,
gint rrtype)
{
/* g_resolver_records_from_res_query() is only available on Unix */
#ifdef G_OS_UNIX
GList *record_list = NULL;
/* Data too long? */
if (data_len > G_MAXSSIZE)
return;
/* rrname is only used in error messages, so doesnt need to vary.
* herr is used similarly, so is just set to zero. */
record_list = g_resolver_records_from_res_query ("rrname",
rrtype,
data,
data_len,
0,
NULL);
g_list_free_full (record_list, (GDestroyNotify) g_variant_unref);
#endif /* G_OS_UNIX */
}
int
LLVMFuzzerTestOneInput (const unsigned char *data, size_t size)
{
const gint rrtypes_to_test[] =
{
/* See https://en.wikipedia.org/wiki/List_of_DNS_record_types */
33 /* SRV */,
15 /* MX */,
6 /* SOA */,
2 /* NS */,
16 /* TXT */,
999, /* not currently a valid rrtype, to test the unknown code path */
};
gsize i;
fuzz_set_logging_func ();
for (i = 0; i < G_N_ELEMENTS (rrtypes_to_test); i++)
test_for_rrtype (data, size, rrtypes_to_test[i]);
return 0;
}